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@Ww 'time anni @man HE URY FAYETTIJ, OF PORT CHESTER, NEW YORK. LettersPatent No. 70,329, dated October 29, 1867.

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TO ALL WHO IT MAY CONGERN:

Be it known that I, HENRY FAYETTE, of Port Chester, in the county ofWestchester, and State of New York, have invented a new and usefulImprovement in Cupola, Blast, or Smelting-Furnace; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the .accompanying drawings, and to theletters of reference' marked thereon, in which Figure l is a verticalsection of a furnace constructed pursuant to my invention.

Figure 2Vis a plan view of the lower section of said furnace, divided inthe lnc :e x, fig. 1; and

Figure v3 is a similar viewof the upper section, inverted'. p

A is the outer casing of the stock, and a, (colored,) a lining oflire-brick. B is an annular air-chamber surrounding the lower portion ofthe furnace. VC is the induction pipe, through which the blast is blown;C1, a central blast pipe, and C2 Czlside blastpipes, all branching fromthe induction-blast pipe C. D D is a blast pipe, in the form of aninverted are, connecting at its upper ends with the air-chamber B, andat its centre with the branch pipe D1. The lower end of the cent-ralblast pipe Cl is surrounded by a circular ange, e, and the upper end ofthe pipe Dl by a similar 4flange, f. In the space between said flanges eandf are four curved wings or air-guident, dividing said space -intofour separate outlets or passage-ways for the air blown down through thepipe C1, or upward throughthe pipeD. The air-chamber B is also providedwith four curved wings or aird guides, s, the form of which is shown infig. 1. YThese wings extend clear across the bottom of the air-chamber,as shown in fig. 3, but do not extend -to. the upper portion of it. Theblast pipes CZ enter the air-chamber at cc, and the ends of the curvedblast pipe D enter it at ol UZ d. At the side where the spout is locatedsaid pipe D is shown in the drawing as branching, and entering thechamber on each side of the spout.

The blast blown in at induction pipe C will divide, one portion goingdown the central pipe G1, and the residue down theoutside pipes C2 C2into the air-chamber B, and from the air-chamber a portion will beforced into the curved pipe D; thence up the central branch pipe D tothe open space between the flanges e andj',`

where itwill meet the d'escending'cnrrent througlrpipeV Cl, `and tlieair from both pipes will be thrown out into the furnace by a whirlingcentrifugal motion imparted by the curved wings t. At the same time, aportion of the air forced into 'the chamber B-will be driyen from saidchamber into the furnace, betweenV the curved wings s, with a whirlingcentripetal motion, imparted by said wings, so that the two currents ofair, whirling in oppod site directions, will 'meet in the furnace. Theair passing down the lcentral pipe C1, anddown the side pipes, willbecome highly heated before passingout of said` pipe Yinto the body ofthe furnace, and thus produce the effects of a hot blast.

For small furnaces, however, I propose to dispense with the centralblast pipe C1 altogether, 'and blow the whole blast into the upperpartof the air chamber B, from which a portion-will be forced into thefurnace between the curved wings c, and the residue down the curved pipeD, and thence up through the central pipe D', as above'described. Insuch case the blast will not be heated, but in all other respects theoperation will be the same as above described.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. A downward central blast through a pipe so located in the furnacethat the air will become heated by the re of the furnace before beingdischarged into the same, substantially as shown and described.

2. A divided downward blast, one portion passing down a flue or pipethrough the centre of the furnace, and the residue down side ilues,'solocated that the air in all said fines will become heated in passingdown the same, substantially as described.

3. An upward central blast from below they furnace, substantially asshown and described.

4. The combination of an upward and downward central blast,substantially as shown and described.

5. In combination with the airchamber B, I claim the curved'wings s, toconduct the blast into the furnace with a whirling centripetal motion,substantially as described. l

6. In combination with a central blast, whether from above or below, orboth, I claim the ilanges or disks e andf, with the intervening curvedwings t, to Vgive the blast from the centre a whirling centrifugalmotion, as described'.

7. In combination with the air-chamber B and curved wings s, I claim acentral blast from above or below, or both, with the curved wings t, allconstructed and arranged substantially as and for the purposesdescribed.

8. In combination with an annular air-chan1ber, as described, I claimpassage-ways for a portion of the air to be forced therefrom into thecircumference of, the furnace, and a curved or bent pipe or line forconducting another portion of the air from said chamber down below, andthence up through the bottom of the furnace,

centrally, as described.

HENRY FAYETTE.

Witnesses:

JOHN B. BARRETT, SETE M. ELDREDGE.

